| 摘要 |
A submarine tanker for petroleum products having a substantially rigid T-shaped frame in longitudinal vertical section and constituted of an inner cylindrical operative center carrying the bridge and crew deck quarters extending fore and aft from the operations and bridge sections. The parts constituting such frame are enclosed in pressure resistant steel. Extending fore and aft from the operations center are two series of cargo tanks made of ordinary ship plate. Enclosing the bow and stern of the vessel are ballast tanks. The lower portions of the two series of cargo tanks are also formed to provide two bottom, longitudinally extending ballast tanks. The exterior portions of the vessel may also be enclosed in a layer or layers of a material known as "tough glass." The cargo tanks are loaded and unloaded from the top of the vessel by a system of conduits which include flexible hose wound on reels secured to the top of the vessel and secured to floats provided with pumps. Means are provided to open holes in pack ice overlying the vessel to permit the aforesaid floats to rise to the surface of the sea. Escape bells are carried by the vessel in the event that the vessel must be abandoned and such bells are capable of functioning to affect this result even when the vessel is submerged under an ice pack.
|
